Lubricating-axle.



J. ALTMANN & M. GILGENBERG.

LUBRIGATING AXLE.

APPLIGATION FILED P31120, 1912.

1,052,638. Patented Feb. 11, 1913.

' unirsi) strapse rarnn'r ernten.)

JOSEPH ALTMANN AND MARTINI GILGENBERG, F KATTOWITZ, GERMANY.

LuBRroA'rrNG-AXLE.

Speecation of Letters Patent.

Patented Feb. 11,1913.

i Application led February 20, 1912. Serial No. 678,937

man Emperor, and residing at Grrnstrasse i 1T, Kattowitz, in the Kingdom of Prussia,

Germany, have invented a new and useful Improvement in Lubricating-Axles, of which the following is a specification.

The present! inventionrelates to wheelssets for vehicles and mine-trucks in particular, in which a hollow axle for the reception of the lubricant-is mounted in a through axle bushing or sleeve, which sleeve comprises` at itsmiddle a widened portion for the reception'. of `the roller bearing.

The new feature of the invention consists in rings loosely mountedat both ends of the hollow axle. The inner surfaces of said rings-are provided with felt rings, surrounding the axle, and the outer surfaces with rubber rings closely fitting within the sleeve. Hereby the advantage is'obtained that the. rings loosely mounted at' both ends of thel axle with the-rubber rings on their outer surfaces do not rotate together with the axle and that therefore the rubber rings too, which; are compressed in absorbing the shocks arising in working do not rotate against the sleeve, whereby wear of the rubber rings is prevented. The hollow axle might be reduced at its ends or possess equal diameter throughout its length. In this case .the ends of the axle bushing are enlarged for the reception of the loosely mounted rings.

Referring to the drawing: Figure 1 is a longitudinal section through the sets of Fig. 2 is a section on the line A-B in Fig. 1. Fig. 3 isa sectio-n on the line C-D in Fig. V1.

The hollow yaxle 1 comprises at its ends spindles 2, 3 for the reception of the truckwheels 4l, 5. The axle is mounted in an axle bushing or sleeve 6 comprising at its middle a widened ,portion 7 for the reception of the roller bearing 8. The cavity in the axle serves for the reception of the lubricant, which is forced through the openings 10, 1l

provided with covers at both ends of the axle into the cavity 9, and reaches the bearings 8 through the holes 12. Lugs1-3 are provided atboth ends of the sleeve 6 for mounting t-he sets of wheels on the vehicle frame or body.

In the enlarged ends of'the axle-bushing 6 loo-sely mounted rings are mounted which are provided at their inner surfaces with felt. rings 15 or rings of softI material and at their outer surfaces with rubber rings 16 or rings of another resilient material. The felt rings surround the hollow axle 1 while the rubber rings 16 closely t in the ends of the axle-sleeve 6. By the felt rings lo and the rubber rings 16 the space between axle 1 and sleeve 6 is shut ofi' at both ends.

In normal operation the ent-ire load is supported by .the roller bearing (8). Only if shocks ofthe mine-trucks arise in working,

lthe rubber rings 16 of the'loosely mounted rings 1l are compressed in absorbing the shocks.

As the friction between the reduced portions of the axle 1 and the felt rings 15 is weaker than the friction between the rubber rings and the inner wall of the sleev'e 6 the rings 14 with the rubber rings 16 will not rotate with the axle 1 against t-he sleeve 6. The consequence of this is. that the rubber rings 16 which have to absorb the above mentioned shocks will be saved for a very long time.

The hollow axle 1 is closed at one end by the screw plug 18`and at the other end by the cover 19. The screw plug 18 as well as the cover 19 are both secured in their position by slitpins 20, 21 one of the slit pins 20 passinga collar 22 arranged before the hub of the wheel l and the other slit pin 21 passing the hub of the wheel.

In the cavity of the hollow axle 1 a rod 25 is loosely supported. During the rotation of the axle this rod 25 presses the 1ubricant through the openings 12. The lubricant used for this purpose is not in a liquid but in a viscous state.

ll'e claim:

In sets of wheels for vehicles and mine trucks in part-iculanthe combination of a hollow axle adapted for the reception of lulbrieant; a sleeve in Whichjtlie hollow axle is E und the exterior rings cloely lttng within 10 mounted, a roller bearing, said Sleeve C0111- 4pmsmg at lts mlddle a port'lon for the rethe sleeve.

.Iniestunony whereof we affix our slgna- I'cepriolrof'said rollerbearing,.rings loosely S tures 'in presence. of'two Witnesses.VVA

.nlourlrt'ed at beth 'ends of .the 'axle, ther'nner Surfees of sind' rings bemg provided with `JOSEPH y MARTIN GILGENBERG yWitneeses:

rings Qf softrnaternl Yand the outersurfaces l 7, l of sind rmgs with rmgs of. 1'Pes1l1ent mate.I l FRAXKUG. Ports', rml, the 1nt-er1lQr rmgs surroundlng saidaxle. l' ERNST KATZ.

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